a. ¬†¬†¬†¬†¬†¬†¬†Inserts to the table will be slower
b. ¬†¬†¬†¬†¬†¬†¬†The size of the ITEM table will be increased
c. ¬†¬†¬†¬†¬†¬†¬†All queries on the ITEM table will be faster if it does not contain a large number of NULL values
d. ¬†¬†¬†¬†¬†¬†¬†The speed of deletes will be increased